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import { RamStatement } from "./RamStatement";
import { RamContext } from "./RamContext";
import { Repository } from "../repository/Repository";
import { Adapter, PersistenceKeys, Sequence } from "../persistence";
import { SequenceOptions } from "../interfaces";
import { Lock } from "@decaf-ts/transactional-decorators";
import {
Constructor,
Decoration,
Model,
propMetadata,
} from "@decaf-ts/decorator-validation";
import {
BaseError,
ConflictError,
findPrimaryKey,
InternalError,
NotFoundError,
onCreate,
OperationKeys,
} from "@decaf-ts/db-decorators";
import { RamSequence } from "./RamSequence";
import { createdByOnRamCreateUpdate } from "./handlers";
import { RamFlavour } from "./constants";
export class RamAdapter extends Adapter<
RamStorage,
RawRamQuery<any>,
RamFlags,
RamContext
> {
constructor(alias?: string) {
super(new Map<string, Map<string, any>>(), RamFlavour, alias);
}
override repository<M extends Model>(): Constructor<RamRepository<M>> {
return super.repository<M>() as Constructor<RamRepository<M>>;
}
override flags<M extends Model>(
operation: OperationKeys,
model: Constructor<M>,
flags: Partial<RamFlags>
): RamFlags {
return Object.assign(super.flags(operation, model, flags), {
UUID: crypto.randomUUID(),
}) as RamFlags;
}
override Context = RamContext;
private indexes: Record<
string,
Record<string | number, Record<string, any>>
> = {};
private lock = new Lock();
// eslint-disable-next-line @typescript-eslint/no-unused-vars
async initialize(...args: any[]): Promise<void> {
return Promise.resolve(undefined);
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
async index(...models: Record<string, any>[]): Promise<any> {
return Promise.resolve(undefined);
}
override prepare<M extends Model>(
model: M,
pk: keyof M
): { record: Record<string, any>; id: string } {
const prepared = super.prepare(model, pk);
delete prepared.record[pk as string];
return prepared;
}
override revert<M extends Model>(
obj: Record<string, any>,
clazz: string | Constructor<M>,
pk: keyof M,
id: string | number
): M {
const res = super.revert(obj, clazz, pk, id);
return res;
}
async create(
tableName: string,
id: string | number,
model: Record<string, any>
): Promise<Record<string, any>> {
await this.lock.acquire();
if (!this.native.has(tableName)) this.native.set(tableName, new Map());
Iif (this.native.get(tableName) && this.native.get(tableName)?.has(id))
throw new ConflictError(
`Record with id ${id} already exists in table ${tableName}`
);
this.native.get(tableName)?.set(id, model);
this.lock.release();
return model;
}
async read(
tableName: string,
id: string | number
): Promise<Record<string, any>> {
if (!this.native.has(tableName))
throw new NotFoundError(`Table ${tableName} not found`);
if (!this.native.get(tableName)?.has(id))
throw new NotFoundError(
`Record with id ${id} not found in table ${tableName}`
);
return this.native.get(tableName)?.get(id);
}
async update(
tableName: string,
id: string | number,
model: Record<string, any>
): Promise<Record<string, any>> {
await this.lock.acquire();
Iif (!this.native.has(tableName))
throw new NotFoundError(`Table ${tableName} not found`);
Iif (!this.native.get(tableName)?.has(id))
throw new NotFoundError(
`Record with id ${id} not found in table ${tableName}`
);
this.native.get(tableName)?.set(id, model);
this.lock.release();
return model;
}
async delete(
tableName: string,
id: string | number
): Promise<Record<string, any>> {
await this.lock.acquire();
Iif (!this.native.has(tableName))
throw new NotFoundError(`Table ${tableName} not found`);
Iif (!this.native.get(tableName)?.has(id))
throw new NotFoundError(
`Record with id ${id} not found in table ${tableName}`
);
const natived = this.native.get(tableName)?.get(id);
this.native.get(tableName)?.delete(id);
this.lock.release();
return natived;
}
protected tableFor<M extends Model>(from: string | Constructor<M>) {
Iif (typeof from === "string") from = Model.get(from) as Constructor<M>;
const table = Repository.table(from);
Iif (!this.native.has(table)) this.native.set(table, new Map());
return this.native.get(table);
}
async raw<R>(rawInput: RawRamQuery<any>): Promise<R> {
const { where, sort, limit, skip, from } = rawInput;
let { select } = rawInput;
const collection = this.tableFor(from);
Iif (!collection)
throw new InternalError(`Table ${from} not found in RamAdapter`);
const { id, props } = findPrimaryKey(new from());
let result: any[] = Array.from(collection.entries()).map(([pk, r]) =>
this.revert(
r,
from,
id as any,
Sequence.parseValue(props.type as any, pk as string) as string
)
);
result = where ? result.filter(where) : result;
if (sort) result = result.sort(sort);
if (skip) result = result.slice(skip);
if (limit) result = result.slice(0, limit);
if (select) {
select = Array.isArray(select) ? select : [select];
result = result.map((r) =>
Object.entries(r).reduce((acc: Record<string, any>, [key, val]) => {
if ((select as string[]).includes(key)) acc[key] = val;
return acc;
}, {})
);
}
return result as unknown as R;
}
parseError<V extends BaseError>(err: Error): V {
Iif (err instanceof BaseError) return err as V;
return new InternalError(err) as V;
}
Statement<M extends Model>(): RamStatement<M, any> {
return new RamStatement<M, any>(this as any);
}
async Sequence(options: SequenceOptions): Promise<Sequence> {
return new RamSequence(options, this);
}
static decoration() {
const createdByKey = Repository.key(PersistenceKeys.CREATED_BY);
const updatedByKey = Repository.key(PersistenceKeys.UPDATED_BY);
Decoration.flavouredAs(RamFlavour)
.for(createdByKey)
.define(
onCreate(createdByOnRamCreateUpdate),
propMetadata(createdByKey, {})
)
.apply();
Decoration.flavouredAs(RamFlavour)
.for(updatedByKey)
.define(
onCreate(createdByOnRamCreateUpdate),
propMetadata(updatedByKey, {})
)
.apply();
}
}
RamAdapter.decoration();
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